TPS54320 SWIFT™ Converter

Texas Instruments' 4.5 V to 17 V input, 3 A synchronous step down SWIFT converter

TPS54320 SWIFT™ Converter Texas Instruments' TPS54320 is a full featured 17 V, 3 A synchronous step down converter that is optimized for small designs through high efficiency and integrated high-side and low-side MOSFETs. Further space savings are achieved through current mode control, which reduces component count, and by selecting a high switching frequency, reducing the inductor's footprint. The output voltage startup ramp is controlled by the SS/TR pin, which allows operation either as a standalone power supply or in tracking situations. Power sequencing is also possible by correctly configuring the enable and the open drain power good pins. Cycle-by-cycle current limiting on the high-side FET protects the device in overload situations and is enhanced by a low-side sourcing current limit that prevents current runaway. Hiccup protection will be triggered if the overcurrent condition has persisted for longer than the preset time. Thermal shutdown disables the part when die temperature exceeds thermal shutdown temperature. The TPS54320 is available in a 14-pin, 3.5 mm x 3.5 mm QFN, thermally enhanced package.

Features Applications
  • Integrated 57 mΩ / 50 mΩ MOSFETs
  • Split power rail: 1.6 V to 17 V on PVIN
  • 200 kHz to 1.2 MHz switching frequency
  • Synchronizes to external clock
  • 0.8 V voltage reference with ±1% accuracy
  • Low 2 µA shutdown quiescent current
  • Hiccup overcurrent protection
  • Monotonic start-up into pre-biased outputs
  • -40°C to 150°C operating junction temperature range
  • Pin-to-pin compatible with the TPS54620
  • Adjustable slow start/power sequencing
  • Power good output for undervoltage and overvoltage monitoring
  • Adjustable input undervoltage lockout
  • Supported by SwitcherPro™ software tool
  • Broadband, networking, and communication infrastructures
  • Automated test and medical equipment
  • DSP and FPGA point-of-load applications
  • Servers and workstations
  • Compact PCI
  • PCI express applications

TPS54320 SWIFT Converter

ImageManufacturer Part NumberDescriptionFunctionOutput ConfigurationAvailable QuantityView Details
TPS54320RHLR datasheet linkIC REG BUCK ADJ 3A SYNC 14QFNTPS54320RHLRIC REG BUCK ADJ 3A SYNC 14QFNStep-DownPositive1921 - Immediate
TPS54320RHLR product page link
Published: 2010-11-12